Eight Faults Of Mantra Recitation

"As stated in the Tantra Requested by Subahu, recite the mantras devoid of the eight faults of mantra recitation: reciting too quickly, too slowly, too loudly (so that others hear), too softly (so that even oneself does not hear), over-enunciating each syllable, interrupting the mantra with conversation, being distracted, and reciting the short syllables as long and the long as short."(from a text explaining visualizations during recitation of the mantra of Manjushri)